Transcript Slide 1
Greening Public Health at
The George Washington
University
Washington, DC
KEY DESIGN & CONSTRUCTION TEAM •PAYETTE /AYERS SAINT GROSS
•AFFILIATED ENGINEERS
•PALADINO
•TADJER COHEN
•WHITING TURNER
Speakers:
NANCY GIAMMATTEO, AIA, – GWU
SCOTT SPANGENBERG, PE, LEED – AEI
BRENDON BURLEY, PhD – AEI
SONG ZHANG, PhD, PE, LEED AP – AEI
April 15, 2013
AGENDA
• Project Background
• Sustainability Goals & Process
• Modeling to Solutions
• Measurement & Verification
• Next Steps
PROJECT BACKGROUND
The GW School of Public Health and Health Services
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Established in 1997 and remains the only School of Public Health in DC
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Over 1200 students from every state and 38 nations
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More than 50 degree options, including 21 master’s degrees, 17 graduate
certificates, 3 undergraduate degrees, and 7 doctoral degrees
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This new ‘home of its own’ (away from the medical school) will consolidates all
7 departments for the first time
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“We are not only contributing to public health, we are living it, shaping it, and
influencing its future.”
PROJECT BACKGROUND
The GW School of Public Health and Health Services
The Building is located on Washington Circle; it is the new “Front Door” to the
Foggy Bottom Campus
Insert Different Map
PROJECT BACKGROUND
East Façade (Looking South from Washington Circle)
PROJECT BACKGROUND
South Façade (Looking North from 24th NW)
PROJECT BACKGROUND
North & West Façades (Looking South from K Street)
PROJECT BACKGROUND
Private Offices
Public Spaces
Classrooms
Open Offices
PROJECT BACKGROUND
SUSTAINABILITY GOALS
GW Office of Sustainability
• Signatory of ACUPCC
• Reduce carbon emissions 40% by 2025 over 2008
baseline
• Climate neutrality by 2040
GW Office of Facilities Services
• $5 M Eco-Building Program to implement energy and
water efficiency projects in existing buildings
GW Office of Facilities Planning & Design
• LEED Silver minimum for all new buildings
• 5 LEED Gold buildings since April 2010; first university in
DC to achieve LEED Gold!
• 7 additional projects currently registered
SUSTAINABILITY GOALS
Evolution from LEED Silver to Platinum
Dean’s Vision
• Showcase of Environmental Design
• Marketability of School to Students & Faculty
Re-thinking the Budget for Sustainability
• Design Efficiency
• Donor Opportunities
SUSTAINABILITY GOALS
GW SPHHS
Project Design Expectations
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Integrated
Design Team
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3rd party LEED Consultant
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Active real-time
Energy Modeling
MODELING TO SOLUTIONS
MODELING TO SOLUTIONS
PRE-CONCEPTS TO REALITY
MODELING TO SOLUTIONS
MODELING TO SOLUTIONS
Energy Modeling Use and Application
• Predicts energy use
• Compares different design options
• Test compliance with ASHRAE 90.1 baseline model (Appendix G)
• Verifies and optimizes control sequences
• Simulates calibrations for Measurement & Verification
SUMMARY
FEATURE
Public/Proprietary
Public Domain
Proprietary
Proprietary
Proprietary
Simulation Method
8760 hours
8760 hours
8760 hours
8760 hours
No
No
Yes
Yes
1024
1024
Unlimited
2500
Graphic Results
Summary
P
P
P
Accepts CAD input
files/gbXML
P
P
Load Design Calculation
Max # of Zones
Export Data back to CAD
files
P
# Terminal Systems
Types
28
28
24
21
# Primary Equipment
Types
27
27
24
22
freeware
freeware
$1995+$413/yr
$1495+$300/yr
Aprroximate Cost
MODELING TO SOLUTIONS
Why Trane TRACE 700
Easy conversion from load calculations to energy calculations.
Unlimited max number of zones
Capability of modeling different airside systems plus many HVAC
plant configurations and control strategies, including Displacement
Ventilation Systems, Active/Passive Chilled Beam Systems, Variable
Refrigerant Volume Systems, Demand Control Ventilation, etc. that
cannot be modeled with other energy modeling software
Comprehensively and actively updated frequently to accommodate
newly developed systems
MODELING TO SOLUTIONS
Future Trends
BIM Integrated Energy Models
Combined Computational Fluid Dynamics (CFD) and Energy Models
MODELING TO SOLUTIONS
Energy Modeling Throughout the Design Process
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Concept: Preliminary studies; load calculations
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Schematic Design: Identifies the primary energy uses
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Design Development: Conducts parametric analyses to evaluate
alternative specifications & understand trade-offs between initial
cost & life-cycle cost
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Construction Documents: Necessary to document compliance
with codes such as the Energy Cost Budget method in the ASHRAE
Standard 90.1 or the Total Building Performance section of the
IECC
MODELING TO SOLUTIONS
Possible Solutions
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Combined heat & power
Triple glazing window
Low e windows
Chilled beam
Displacement Ventilation
LED Lighting
Advanced Lighting Controls
Photovoltaics
Heat recovery chillers
Heat wheels
Geothermal
Green power
Green roof
Wind Turbines
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Water side economizer
Air side economizer
Daylighting
Ice storage
Water reuse
Water efficient plumbing
fixtures
Natural ventilation
Operable windows
Rainwater harvesting
Sunshade screen
Dedicated Outdoor Air
Systems
Solar Hot Water Heating
MODELING TO SOLUTIONS
Dedicated
Outside Air
Systems
Variable Air
Volume Chilled
Beams
Improved
Building
Envelop
Variable Air
Volume
Under Floor
Displacement
Heat
Recovery
Chiller
MODELING TO SOLUTIONS
Skin Performance
Terracotta Rain Screen –
Open joints allow for air flow in the
cavity behind the tiles. This creates a
pressure balanced system when
combined with
compartmentalization of the cavity.
Gaskets and overlapped joints are
used to discourage water from
entering the cavity while still
allowing ventilation of the cavity. The
air space and insulation increase the
thermal performance of the exterior
wall system.
MODELING TO SOLUTIONS
Chilled Beams on Dedicated Outside Air
Chilled beams reduce the need for cooling by air, allowing the
use of dedicated ventilation.
MODELING TO SOLUTIONS
Heat Recovery Chiller
Utilizes year-round cooling demands to generate heating
water for HVAC use. Water use is also reduced at evaporative
cooling towers.
MODELING TO SOLUTIONS
Under Floor Displacement Ventilation
Displacement ventilation limits cooling to the occupied
area and takes advantage of natural air currents to
improve environmental quality.
MODELING TO SOLUTIONS
Daylighting, Lighting, and Controls
Integrating Artificial & Natural Lighting: Automated
reduction of artificial lighting in response to daylight
conditions on both interior and exterior.
Energy Efficient Lighting: Extensive use of CFL and
selected use of LED lights reduce energy use from
required lighting.
Controls: Lighting Management System in public
spaces. Extensive use of occupancy sensors and timer
switches throughout the building.
MODELING TO SOLUTIONS
Storm Water Management and Reclamation
MODELING TO SOLUTIONS
What Did NOT Apply & Why
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Combined Heating and Power: Project Scale; Initial Cost
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Photovoltaics: Irregular Roof Shape, Not Enough Roof Space
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Thermal Massing: Building Façade, Cost
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Natural Ventilation: Climate in Washington DC Area; Hot & Humid
in Summer
(Expand)
MODELING TO SOLUTIONS
Combined Heat and Power
Utilize locally consumed fuel to simultaneously generate
power. Requires sustained demand for heating to run a
generator.
MODELING TO SOLUTIONS
Photovoltaics
Can be applied to rooftops, and emerging technology
includes facades. Requires large amounts of real estate.
MODELING TO SOLUTIONS
Annual Energy Use Comparison
Proposed Design vs. ASHRAE 90.1-2007 Baseline
35,000
Annual Energy Use (MMBtu/yr)
30,000
Fan
Pump
25,000
Heat
Rejection
Cooling
20,000
Heating
Lights
15,000
Receptacle
10,000
5,000
0
Baseline
Proposed Design
MODELING TO SOLUTIONS
Lessons Learned
• There is no one size fits all solution for a sustainable building.
• Systems can work against each other, do not make decisions
in isolation.
• Be aware of the limitations of your energy model; complex
systems cannot always be modeled out of the box.
• Energy models are predictive of, but not guar
• Try to minimize the glass area of the building. This project
had 10% more glass allowed beyond Appendix G; which
penalized the project of X energy points.
MEASUREMENT & VERIFICATION
“Begin with the end in mind”
(Steven Covey)
• Data Collection (Metering)
• Data Transfer (Trending)
• Data Management (Optimization)
MEASUREMENT & VERIFICATION
MEASUREMENT & VERIFICATION
MEASUREMENT & VERIFICATION
MEASUREMENT & VERIFICATION
Importance
• Better building maintenance
• Improved real return on investment
• Benefits to future projects from
knowledge developed
MEASUREMENT & VERIFICATION
GW Leadership Approach
Facility Services (Jim Schrote):
• Commissioning Manager Leadership (Joe Lenzi)
• Energy & Environmental Management (Doug Spengal)
• Operations & Maintenance Leadership (Bob Oakley)
CX Manager
EEM
O&M
NEXT STEPS
Building Dashboard: Education on Display
NEXT STEPS
BIM Data Model
NEXT STEPS
Current LEED Point Standing
Current Points Targeted / Possible Points
26 / 26 pts. Sustainable Sites
10 / 10 pts. Water Efficiency
27 / 35 pts. Energy & Atmosphere
6 / 14 pts. Materials & Resources
12 / 15 pts. Indoor Environmental Quality
6 / 6 pts. Innovation & Design Processes
4 / 4 pts. Regional Priority
91 / 110 pts.
40
50
60
80
Certified
Silver
Gold
Platinum
110
NEXT STEPS
Future of SPPHS Project
Greening Public Health at
The George Washington
University
Washington, DC
KEY DESIGN & CONSTRUCTION TEAM •PAYETTE /AYERS SAINT GROSS
•AFFILIATED ENGINEERS
•PALADINO
•TADJER COHEN
•WHITING TURNER
Speakers:
NANCY GIAMMATTEO, AIA, – GWU
SCOTT SPANGENBERG, PE, LEED – AEI
BRENDON BURLEY, PhD – AEI
SONG ZHANG, PhD, PE, LEED AP – AEI
April 15, 2013